News Minute: Here is the latest Oklahoma news from The Associated Press at 8:40 a.m. CDT

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OKLAHOMA CITY (AP) - Polls have opened across Oklahoma for the 2018 primary election for governor and other statewide and legislative seats. Polls will remain open until 7 p.m. Tuesday. The race for Oklahoma governor is at the top of the primary election ballot. A total of 15 candidates _ 10 Republicans, two Democrats and three Libertarians _ are seeking to replace term-limited Republican Gov. Mary Fallin in the first open governor's race since 2010.

OKLAHOMA CITY (AP) - Oklahoma voters are winnowing a crowded field of candidates seeking the state's top job following an eight-year reign of Republican dominance across state government. With no race for the U.S. Senate this cycle, much of the money and attention has focused on the 15 candidates trying to succeed term-limited Gov. Mary Fallin. With 10 of those running in the GOP contest, that nomination likely won't ultimately be settled until a two-way runoff on Aug. 28.

WASHINGTON (AP) - The National Trust for Historic Preservation is identifying 11 places around the U.S. that it says are at risk because of development or neglect. The annual list can mobilize support and funding for preservation but listings can also be controversial if they involve halting proposed construction or demolition. This year's list ranges from Route 66 to Denver's Larimer Square to African-American historic sites in Connecticut and Mississippi.

OKLAHOMA CITY (AP) - Oklahoma primary voters are weighing whether to approve one of the nation's least-restrictive laws allowing medical marijuana, the nation's first cannabis ballot question of the year. The question is the result of an activist-led signature drive launched more than two years ago. It would make it legal to grow, sell and use marijuana for medicinal purposes. The proposed law outlines no qualifying conditions, which would allow physicians to prescribe its use for a broad range of ailments

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